using variables in gsub - ruby

Question

I have a variable address which for now is a long string containing some unneccessary info, eg: "Aboriginal Relations 11th Floor Commerce Place 10155 102 Street Edmonton AB T5J 4G8 Phone [phone] Fax [phone] Email gerry.kushlyk#gov.ab.ca"
Aboriginal Relations is in a variable called title, and I'm trying to call address.gsub!(title,''), but its returning the original string.
I've also tried address.gsub!(/#{title}/,'') and address.gsub!("#{title}",'') but those won't work either. Any ideas?
Sorry, the typo occurred when I typed it into stack overflow, heres the code and the output, copied and pasted:
(this is within a loop, so there will be multiple outputs)
p title
address.gsub!(title,'')
p address
output
"Aboriginal Relations "
"Aboriginal Relations 11th Floor Commerce Place 10155 102 Street Edmonton AB T5J 4G8 Phone [phone] Fax [phone] Email gerry.kushlyk#gov.ab.ca"
"Aboriginal Tourism Advisory Council "
"Aboriginal Tourism Advisory Council 5th Floor Terrace Building 9515 107 Street Edmonton AB T5K 2C3 Phone [phone] Fax [phone] Email foip.fintprccs#gov.ab.ca"
"Acadia Foundation "
"Acadia Foundation PO Box 96 Oyen AB T0J 2J0 Phone [phone] Fax [phone] Email acadiafoundation#telus.net"
"Access Advisory Council "
"Access Advisory Council 12th Floor Centre West Building 10035 108 Street Edmonton AB T5J 3E1 Phone [phone] Fax [phone] Email barb.joyner#gov.ab.ca"
"ACCM Benevolent Association "
"ACCM Benevolent Association Suite 100 9403 95 Avenue Edmonton AB T6C 4M7 Phone [phone] Fax [phone] Email accmmanor#shaw.ca"
"Acme Municipal Library "
"Acme Municipal Library PO Box 326 Acme AB T0M 0A0 Phone [phone] Fax [phone] Email aamlibrary#marigold.ab.ca"
likewise, if I try address.match(/#{title}/) I get nil.

Answer 1

I'm assuming you're using ruby 1.9 or higher.
It's possible that the trailing whitespace is a non-breaking space:
p "Relations\u00a0" # looks like a trailing space, but strip won't remove it
to get rid of it:
"Relations\u00a0".gsub!(/^\u00a0|\u00a0$/, '') # => "Relations"
A more generic solution for all unicode whitespace:
"Relations\u00a0".gsub!(/^[[:space:]]|[[:space:]]$/, '') # => "Relations"
To see what the character is in your case:
title[-1].ord # => 160 (example only)
'%x' % title[-1].ord # => "a0" (hex equivalent; example only)

Answer 2

title = title[0..-2] seemed to solve it. for some reason strip and chomp wouldn't work.